Color coding of The Tubes
Color coding of the tubes for the blood samples:
Red | None | For serum |
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Lavender | EDTA |
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Orange | Thrombin |
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Light Blue | Sod. citrate |
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Gray | Na fluoride/K oxalate |
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Green |
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Yellow | Na+polyanetholesulfate |
| Blood culture | |
Glod |
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Light green |
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| Potassium determination | |
Black |
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| Westgreen ESR |
Questions and answers:
Question 1: What is the purpose of red cap tubes??
Question 2: What is the purpose of yellow cap tube?
What color blood tube is used for CBC?
The following tests may be drawn in the same Lavender (Purple) top tube: CBC, SED Rate (ESR), Reticulocyte. Draw an extra lavender for each Glycohemoglobin and BNP. EDTA Sodium fluoride (serum tube) For glucose determinations.
What tube is used for whole blood?
Lavender (EDTA): Contains the anticoagulant EDTA. This tube is used for preparing EDTA plasma, whole blood, or bone marrow specimens. Tube should be inverted 8-10 times after collection to prevent clotting.
Why is EDTA tube used for CBC?
It inhibits clotting by removing or chelating calcium from the blood. EDTA most important advantage is that it does not distort blood cells, making it ideal for the most hematological tests.
What color stopper must be used to collect the blood specimen for each of the tests listed complete blood count?
A red-stopper tube is used to collect a blood specimen for most blood chemistries.